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Edwards Announces New Liquid Ring Vacuum Pump


Intelligent pump is made for applications which are wet, humid and corrosive

Edwards Vacuum has developed a new range of new liquid ring pumps - the ELRi series - made for applications which are wet, humid as well as corrosive.

According to the company, the stainless steel impeller, endplates, liquid reservoir and heat exchanger makes this pump resilient against corrosion and harsh process gases. The internal injection channels reduce the risk of leakage while the horizontal motor flange arrangement saves precious time on maintenance. Use of mechanical seals also ensure reliable operation by preventing leaks as well as extending service intervals.

The technology is contained in a compact noise cancelling sturdy canopy protecting and extending lifetime of the electronic components.

The ELRi is equipped with two variable speed drives (VSD). While the main VSD matches the speed of the pump to vacuum level by adjusting its speed, the second VSD regulates the water flow through the centrifugal pump according to the operating conditions to avoid risks of cavitation. A patented algorithm maintains a perfect harmony between the two VSDs ensuring optimal performance.

In addition, it is protected against automatic seizure, so users do not have to worry about the pump failure after long periods of inactivity.

The integrated air logic controller enables the monitoring of important features and parameters of the pump and also offers the option of set-point control. This allows users to have a vacuum pump that matches the process demand saving energy. While the ECOntrol box even allows you to connect and control multiple ELRi pumps, the Icon Box enables smart monitoring and remote controlling ensures optimal servicing to get maximum uptime with your pumps. Along with this, water consumption is also reduced as the separator is only filled up when required.

The ELRi series comes in pumping capacity 750-1050m3/hr covers a wide range of applications in the central vacuum, pharmaceutical , plastics, conveying and food applications.

Megha Ajmal product manager for Rough Vacuum products commented: “While the standard range of pumps is a perfect solution of general industrial applications, our Heavy-Duty range is designed with all process wetted parts to be stainless steel.

"All pumps are also fitted with spray nozzles as standard which are particularly useful for high steam load applications allowing to pump increased capacity of gas load.The manual and automatic modes of flushing allow operation in even in the dirtiest applications with minimal downtime."

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